The curent one has:
pid=`pidofproc ypbind`
if [ -n "$pid" ]; then
echo -n $"Listening for an NIS domain server."
times=1
until ypwhich > /dev/null 2>&1 || [ "$times" = "3" ]
do
RETVAL=$?
echo -n "."
times=$[$times+1]
done
fi
It has several problems:
1. If first time ypwhich failes, RETVAL will always be non-zero.
2. There is no sleep in bewteen. On my network, it may take up to
15 seconds from starting ypbind to working ypwhich.